S
M
T
W
T
F
S
30
71°
60°
31
68°
57°
1
69°
54°
2
66°
57°
3
72°
64°
4
66°
59°
5
68°
56°
6
73°
53°
7
68°
61°
8
63°
56°
9
63°
54°
10
66°
50°
11
67°
52°
12
67°
55°
13
68°
56°
14
72°
57°
15
63°
52°
16
62°
55°
17
60°
50°
18
62°
51°
19
63°
50°
20
65°
51°
21
62°
52°
22
62°
50°
23
63°
51°
24
64°
51°
25
61°
51°
26
60°
49°
27
62°
51°
28
63°
46°
29
57°
45°
30
58°
48°
1
58°
50°
2
61°
50°
3
62°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Grimethorpe
Grimethorpe's September 2026 forecast shows daily high temperatures ranging from 57° to 72°, with overnight lows between 45° and 57°. The average high for September is 63° with an average low of 51°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Grimethorpe. See also: October | November | December.
